.play {
    width: 60px;
    height: 30px;
    background-color: #f66;
    color: white;
    border-radius: 30px;
    position: relative;
    left: calc(50% - 30px);
    top: -50px;
}
.my-video {
    position: fixed;
    width: 100%;
    top: 50%;
    transform: translateY(-50%);
}
.detail_main {
    padding: 10px;
    padding-bottom: 60px;
    p {
        line-height: 36px;
    }
}
.detail_footer {
    position: fixed;
    bottom: 0;
    left: 0;
    border-top: 1px solid #f66;
    width: 100%;
    height: 50px;
    background-color: white;
    display: flex;
}